H12-891_V1.0 Dumps 2022 New Huawei H12-891_V1.0 Exam Questions [Q353-Q374]

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H12-891_V1.0 Dumps 2022 – New Huawei H12-891_V1.0 Exam Questions

Free H12-891_V1.0 braindumps download (H12-891_V1.0 exam dumps Free Updated)

NEW QUESTION 353
Regarding the certification of the ISIS protocol, there is a correct statement

Connection authentication can realize the authentication of the hello messages of Leve-1 and Leve-2

After configuring the connection authentication, the IIH issued by the router must carry the authentication TLV

After configuring zone authentication, the router issues an IIH, SNP, LSP-strap-to-tape authentication TLV

The two routers are configured for area authentication and interface authentication, and the passwords are the same, so the two can establish an isocopied relationship

NEW QUESTION 354
In a VXLAN network, traffic is connected to the VXLAN network, and it can also be used to communicate with the same subnet within the same XLAN network

NVE interface

VXVAN L2 Gateway

VXLAN L3 Gateway

VLANIF interface

NEW QUESTION 355
The following description of Filter-Policy is correct?( Radio neck).

With Filter-Policy, on ASBR in OSPF, you can filter the generation of type5 LSA and type7LSA.

Prefix lists can be used to filter both routes and packets.

Filter-policy filters the link state information received or published, and can modify the properties of route entries.

When using a prefix list to filter routes, the table entry ip-prefix 1 deny 0000 0 less-equal
32 matches only the default route.

NEW QUESTION 356
In which of the following cases, RSTP refreshes the MAC address table?( Multi-select)

When the port state transitions from Forwarding to Disking

Only when the port state transitions from Listening to Disccarding

When a topology change notification is received

When the status of a port changes

CE when the port state transitions from Disking to Forwarding

NEW QUESTION 357
When you deploy LLQ, you need to configure bandwidth parameters, what is the significance of bandwidth parameters?( Single choice questions).

Provides a built-in policer to limit the maximum available bandwidth of a low-latency queue during congestion

The parameter should be as small as possible. It means that the bandwidth is always preserved, and even if the LLQ is set, changing the parameters will reduce the available bandwidth of the interface

It represents a reference CIR to calculate the burst size D of the built-in tactician token bucket Changing parameters is an option because LLQ always takes precedence over other queues

NEW QUESTION 358
Two routers, connected together through the serial port, but can not ping between each other , now check the port status as follows: Can the following information determine what the cause is?

Insufficient link bandwidth

The IP addresses on both ends are not on the same network segment

The link layer protocols on both ends are inconsistent

Subnet mask does not match the

NEW QUESTION 359
As shown in the figure, in the context of IPv4 and IPv6, the SEL field in the NET address of isis always takes a value of 00 ?

Right

Wrong

NEW QUESTION 360
The main routing policy tools that BGP can use are Filter-policy and Route-policy, where Fate-policy can only filter routes and Route-policy can only modify routes

TRUE

FALSE

NEW QUESTION 361
When configuring ISIS zone authentication, which ISIS message will carry the authentication letter? ( Single choice questions).

ISIS ?Level-1 ?SNP ?LSP?

ISIS ?Level-2 ?SNP ?LSP?

Hello message of ISIS’s Level-1.

Hello message of ISIS’s Level-2

NEW QUESTION 362
In the evolution from IPv4 networks to IPv6, some transition technologies have emerged, which of the following are common types of transition technologies?

Dual-stack technology

Tunneling Technology

Compatible with Technology

Conversion Technology

NEW QUESTION 363
As shown in the figure, the use of redundant links between the branch and the headquarters to establish IPsecVPN, while turning on URLPF on the Router_B for traffic from branch l, which of the following options is correct?

When using IPsec active-standby link redundant backups to enable the URPF function under the physical interface , it is recommended to use URPF loose mode.

When using IPsec multilink redundant backup, the URPF function can be used under the physical interface, and URPF strict mode can be used

When using IPsec multilink redundant backups, urPF can be enabled under the tunnel interface, and URPF strict mode can be used

When using lPsec active-standby link redundancy backup, the URPF function is enabled under the physical interface, and URPF strict mode can be used.

NEW QUESTION 364
Assume that BGP/MPLSIPVVPN, OSPF, LDP, and static routing protocols are already enabled on the PE router . Which of the following protocols need to enable GR on PE in order to get NSF functionality?
(Multiple choice questions).

BGP

Static circuit

OSPF

MPLS LDP

NEW QUESTION 365
Link state information is isolated by default between different IS-IS processes on the same router.

TRUE

FALSE

NEW QUESTION 366
When deploying the ISIS protocol in an IPv6 environment , the following statement is correct (single choice).

By default, the DIS priority for broadcast network interfaces at Level-1 and Level-2 is 1

In broadcast networks, IPv4 and The DIS priority for IPv6 can be set separately

In the same broadcast network. If each router supports both IPv4 and IPv6 The DIS for IPv4 and IPv6 must be the same device

IS-IS is configured under the finger port is ISIS silent, this interface will not send ISIS packets, but will receive ISIS packets

NEW QUESTION 367
In inter-domain packet filtering, which of the following options belongs to the outbound direction?

trust –>Local

untrust–> dmz

trust–> untrust

untrust–> trust

NEW QUESTION 368
Regarding the description of the encapsulation format of the labels in MPLS, the correct one is ?

The TTL field in the label has a similar meaning to the TTL (Time To Live) in the IP packet, and also has the effect of preventing loops

The total length of an MPLS single tag is 4 bytes (32 bits).

For Ethernet, PPP packets, the tag stack is like a “cushion layer”, located between the layer 2 header and the data, and when there is a VLAN tag, the MPLS header is placed on the Ether head and VLANtag between

label in the S field, lbit Used to identify whether the label is a bottom label, and a value of 1 indicates that it is the penultimate label

NEW QUESTION 369
WRED is configured on the newly deployed router HW The following description of the WRED feature is correct as ?( Multiple select).

WRED can set different drop thresholds and packet loss rates for packets of different priority

When traffic exceeds the minimum threshold, WRED starts dropping all ingress traffic (tail drops).

Avoid global synchronization by selectively dropping multiple TCP streams Low-bandwidth traffic is easier to drop than high-bandwidth traffic

NEW QUESTION 370
Regarding the characteristics of CE double attribution, the description is wrong with ?

CE accesses the backbone through two links that can be used as both load sharing and primary and standby links.

CE and PE form a CE dual-home network, which can ensure high network availability.

VRFs of two PEs connected to the same CE can belong to different VPNs.

In the CE dual home network, it is possible to generate loops, and you can use route-tag to solve the loop problem.

NEW QUESTION 371
What is the following description of LDP reliability?

LGP GR (Graceful Restart) takes advantage of the high difference between the LS forwarding plane and the control plane to realize that the device forwards without interruption when the protocol is restarted or the master-standby is reversed

Manually configured LDP FRR policy defaults to a 32-bit backup route that triggers LDP to establish a backup ISP

The LDP ERR can also generate an ISP for a tag map from a non-optimal next hop, and create a forwarding table entry as a backup of the primary LSP

LDP and LGP linkage, the need for IGP to suppress the release of routes, to ensure that LDP and LGP paths are consistent

NEW QUESTION 372
Is the following correct statement for the VXLAN message?

The outer destination IP address is the IP address of the VTEP at the far end of the VXLAN tunnel

The source UDP port number is 4789

The destination UDP port number is 4789

VNI has 24 T bits to distinguish the VIAN segment

NEW QUESTION 373
The following about the Router-LSA of OSPFv3 is correct?( Single choice questions).

The router-LSA data area contains the Link-Local address

The router-LSA data area contains the Interface ID of the neighbor on this side

Similar to OSPFv2, the Option field exists in the header of LSA, not in the data area of Router-LSA

When LS type= Ox0001 in the head of LSA, the data area representing LSA is Router-LSA

NEW QUESTION 374
A lot of overwave techniques have emerged in the process of replacing the IPV4 addresses used in the network with lP6 addresses. These technologies are divided into two categories, one is IP4IPV6 coexistence technology, the other is PA/IP>6 interoperability technology, which of the following options sleep in IPv4/IPv6 coexistence technology?

NAT64

IPv6 over IPv4

Dual Stack

ISATAP